+elif [ "$sbcl_arch" = "ppc" -a "$sbcl_os" = "linux" ]; then
+ # Use a C program to detect which kind of glibc we're building on,
+ # to bandage across the break in source compatibility between
+ # versions 2.3.1 and 2.3.2
+ $GNUMAKE -C tools-for-build where-is-mcontext
+ tools-for-build/where-is-mcontext > src/runtime/ppc-linux-mcontext.h